Organization In addition to the command's headquarters OSI has
eight field investigations regions. Seven of the regions are aligned
with Air Force major commands: Region 1 with Air Force Materiel
Command, Region 2 with Air Combat Command, Region 3 with Air Mobility
Command, Region 4 with Air Education and Training Command, Region 5
with U.S. Air Forces in Europe, Region 6 with Pacific Air Forces, and
Region 8 with Air Force Space Command.
While the regions serve the investigative needs
of those aligned major commands, all OSI units and personnel remain
independent of those commands, and their chains of command flow
directly to OSI headquarters. Such organizational independence ensures
The single region not aligned with a major
command is Region 7, the mission of which is to provide
counterintelligence and security-program management for special-access
programs under the Office of the Secretary of the Air Force.